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restorePar
restorePar
99
Get Actual Parameters from Scaled Values
Description
Restore scaled parameters to their original units. Used in minimization by calcMin.
Usage
restorePar(S,pvec)
Arguments
S
scaled parameter vector.
pvec
a data frame comprising four columns - c("val","min","max","active")
and as many rows as there are model parameters. The "active" field (logical) determines whether the parameters are estimated (TRUE) or remain fixed
(FALSE).
Details
2
Restoration algorithm: P = Pmin + (Pmax − Pmin )(sin( πS
2 ))
Value
Parameter vector converted from scaled units to original units specified by pvec.
Examples
pvec <- data.frame(val=c(1,100,10000),min=c(0,0,0),max=c(5,500,50000),
active=c(TRUE,TRUE,TRUE))
S
<- c(.5,.5,.5)
P
<- restorePar(S,pvec)
print(cbind(pvec,S,P))
runExamples
Run GUI Examples Included with PBS Modelling
Description
Display an interactive GUI to demonstrate PBS Modelling examples.
The example source files can be found in the directory PBSmodelling/examples, located in
R’s directory library.